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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        class phone {
            //静态属性 
            static name = '手机';
            static change = function() {
                console.log('我可以改变世界！');
            }
        }
        let nokia = new phone();
        console.log(nokia.name); //输出undefined 因为static标注的对象属于类，不属于实例对象 
        console.log(phone.name); //输出手机
    </script>
</body>

</html>